For your current Air Quality Health Index (AQHI) click the circle closest to your location.

The AQHI is a scale identifying the quality of the air and human health impacts. AQHI numbers represent low (1-3), moderate (4-6), high (7-10) and very high (+10) short-term human health risks to help you plan your outdoor activity accordingly.

Physical activity increases the amount of air you breathe and should be reduced or rescheduled based on the AQHI. The AQHI is calculated based on the risks of a combination of common air pollutants including ozone (O3), nitrogen dioxide (NO2) and particulate matter (PM2.5) which are known to harm human health.

Air quality is changing all the time, though daily and weekly patterns exist. Locate the nearest AQHI monitoring station near you and click to see historical measurements.

The data contained in this website has not undergone verification and is intended for educational purposes only.